ATR2733-PLQW Atmel, ATR2733-PLQW Datasheet
ATR2733-PLQW
Specifications of ATR2733-PLQW
Related parts for ATR2733-PLQW
ATR2733-PLQW Summary of contents
Page 1
... The ATR2733 is a front-end monolithic integrated circuit, manufactured using Atmel’s silicon-germanium BiCMOS process (SiGMOS). The ATR2733 carries out all functions of RF and IF processing, as well as the clock-signal generation for these functions. Therefore, there is an integrated fractional PLL, which, equivalent to most of the other functions, can be controlled via an external digital bus ...
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... Connection for capacitor for filtering internal voltage/current reference circuits (capacitor to VABIAS) 13 IF1O+ (Differential) output of IFVGA1 14 IF1O- 15 RREFE Connection for resistor for current reference (resistor to ground) 16 AGCSAW Connection for capacitor for time constant of AGC of mixer for VHF 17 IF1IN+ (Differential) input of 1st IFVGA 18 IF1IN- ATR2733 [Preliminary VDD 1 LNAVIN+ 2 LNAVL+ 3 LNAVL- 4 LNAVIN- 5 VALNA 6 AGCREF 7 ...
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... Crystal oscillator clock output to baseband 45 XOUT if used: ac-couple to baseband (single VCXO-concept) if not used: short-circuit to GND 46 VDI Supply voltage from baseband (1.65V ... 3.6V) for adaptation of interface to baseband 47 XTALA Connection for crystal for reference clock 48 XTALB Paddle GND Ground 4926BS–DAB–05/06 ATR2733 [Preliminary] 3 ...
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... Functional Description The ATR2733 front-end IC was developed as a tuner IC for DAB reception. It was designed for operation in VHF BIII (174 MHz to 240 MHz). The front end contains gain-controlled LNAs and a VHF-band mixer with a fractional PLL. The IF path contains three gain-controlled amplifiers. The front-end IC allows the use of automatic tuning, which contains an adjustable input filter for VHF BIII and an adjustable preselection filter for VHF reception ...
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... AGC in General There are three AGCs in the ATR2733, one for the RF signals (3), one for the very beginning of the IF path (mainly VHF mixer), and one for the IF amplifiers (5) down to the output to baseband (7). In these AGCs, the output signals of the relevant blocks are amplified, weakly band-pass fil- tered, rectified, and, finally, low-pass filtered ...
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... RSSI Measurement The ATR2733 offers the option of getting information about the field strength. This is not an absolute real-field-strength value, but an indication of in which range the field strength is avail- able. This information can be obtained from the 8 low bits of the status register. ...
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... The down-converting frequency of 38.912 MHz for VHF signal is done by an additional on-chip VCO using an internal fractional-N PLL. Due to the digital tuning option of the reference frequency, the ATR2733 is able to support the single reference clock design if the baseband can support such a feature (as the ATR2740 does) ...
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... Some things need to be taken into account when programming the ATR2733 via the SPI inter- face: the data packet needs to be properly configured to write into the 14 different registers. In principle, there are 16 registers. Fourteen of them are used to control the ATR2733. The two others, registers 15 and 16, are Test Mode Registers. All these registers need to be reset by writing “ ...
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... Type means 100% tested 100% correlation tested Characterized on samples Design parameter 4926BS–DAB–05/06 Symbol stg Symbol R thJC Symbol amb = +3.3V +25°C, 50 input match CC amb Pin Symbol leak ATR2733 [Preliminary] Value 4.0 –40 to +100 –40 to +150 Value 35 Value 3.0 to 3.5 –40 to +85 Min. Typ. Max. Unit 3.0 3.5 1. µA 1 µ 150 mA ...
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... Maximum input power 7.5 level LNA input frequency 7.6 range 7.7 LNA gain control range *) Type means 100% tested 100% correlation tested Characterized on samples Design parameter ATR2733 [Preliminary +3.3V +25°C, 50 input match CC amb Pin Symbol V BUSH V ...
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... Ordering Information Extended Type Number ATR2733-PLQW ATR2733-PLPW 9. Package Information Package: VQFN_7 x 7_48L Exposed pad 5.6 x 5.6 Dimensions in mm Not indicated tolerances ±0.05 1 Pin 1 identification 12 Drawing-No.: 6.543-5130.01-4 Issue: 1; 21.03.06 4926BS–DAB–05/06 Package Remarks QFN48 7 mm QFN48 7 mm Top 48 7 0.2 0.9 ± ...
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